adding firewall function to firegex!

backend/modules/firewall/models.py

@@ -0,0 +1,33 @@
+class Rule:
+    def __init__(self, rule_id: int, name: str, active: bool, proto: str, ip_src:str, ip_dst:str, port_src_from:str, port_dst_from:str, port_src_to:str, port_dst_to:str, action:str, mode:str):
+        self.rule_id = rule_id
+        self.active = active
+        self.name = name
+        self.proto = proto
+        self.ip_src = ip_src
+        self.ip_dst = ip_dst
+        self.port_src_from = port_src_from
+        self.port_dst_from = port_dst_from
+        self.port_src_to = port_src_to
+        self.port_dst_to = port_dst_to
+        self.action = action
+        self.input_mode = mode in ["I"]
+        self.output_mode = mode in ["O"]
+        
+    
+    @classmethod
+    def from_dict(cls, var: dict):
+        return cls(
+            rule_id=var["rule_id"],
+            active=var["active"],
+            name=var["name"],
+            proto=var["proto"],
+            ip_src=var["ip_src"],
+            ip_dst=var["ip_dst"],
+            port_dst_from=var["port_dst_from"],
+            port_dst_to=var["port_dst_to"],
+            port_src_from=var["port_src_from"],
+            port_src_to=var["port_src_to"],
+            action=var["action"],
+            mode=var["mode"]
+        )